Process of producing fire and water proof articles.



UNITED STATES PATENT OFFICE.

GEORGE S. IDONAHEY, OE PITTSBURG, KANSAS.

PROCESS OF PRGDUC ING FIRE AND WATER PROOF ARTICLES.

orenzo.

No Drawing.

. Producing Fire and Water Proof Articles;

and I do declare the following to be a full, clear, and exactdescription'of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a rocess for producing a strong, durable,lasting and inexpensive fire and Water proof article such as railwayties, fence posts, telegraph poles, building blocks and the like.

The process consists in thoroughly com.- iningling by agitation orotherwise by weight /100 off-coal clay; 60/100 of coal shale; 10/100 ofsand and 5/100 of crude Kansas petroleum; then molding the compositionso formed into the desired shape, and finally baking the article until aglazed or japanned surface is obtained.

I wish it to be understood that by using crude Kansas petroleum as oneof the ingredients of my composition the efl'ect of baking after moldingis to drive off the volatile constituents of this andleave behind abinder consisting principally of the more refractory residua, which inKansas petroleum consist largely of hard resistant asphaltic materialsand coke that form a coat ing highly resistant to weather influences,

Specification 0! Letters Patent.

Patented Jan. 23, 1912.

Application filed September 8, 1908. Serial No. 452,032.

as well as a like coating. used in the efficient. It

quite ornamental black japan The shale, particularly when proportionsspecified, is very seems to have a considerable aflinity on the one handfor the crude'p'etrd' lelnnand on the other it mixes well with theclay.- The sand in the proportion indicated,

is just about enough to keep an object from cracking during burning. Theburning must be continued until the clays and sand are thoroughly burnedtogether but must not be continued long enough to efiect the oxidationor evaporation of the petroleum residua and coke.

What I claim is:

The process of producing a fire and water proof article as describedconsisting in mixing together thoroughly in proportion 25 pounds of coalclay, 60 pounds of coal shale, 10 pounds of sand and 5 pounds of crudepetroleum, then molding this mixture into the article desired,and'finally baking the same to drive off the volatile constituents, andto burn together the clays and sand, the burning being stopped beforethe petroleum residua and coke are all burned or evaporated and at apoint where a black or japan like coating will be left on the article.

In testimony whereof I have hereunto set my hand in presence oftwo'subscribing witnesses.

enonen s. DONAHEY. Witnesses:

T. H. SHANKs,

Gr. A. HENNEY.

